// 固定导航
function nav() {
    var ua = navigator.userAgent;
    /Safari|iPhone/i.test(ua) && 0 == /chrome/i.test(ua) && $("#aside-nav").addClass("no-filter");
    var drags = {
            down: !1,
            x: 0,
            y: 0,
            winWid: 0,
            winHei: 0,
            clientX: 0,
            clientY: 0
        },
        asideNav = $("#aside-nav")[0],
        getCss = function (a, e) {
            return a.currentStyle ? a.currentStyle[e] : document.defaultView.getComputedStyle(a, !1)[e]
        };
    $("#aside-nav").on("mousedown", function (a) {
        drags.down = !0, drags.clientX = a.clientX, drags.clientY = a.clientY, drags.x = getCss(this, "right"), drags.y = getCss(this, "top"), drags.winHei = $(window).height(), drags.winWid = $(window).width(), $(document).on("mousemove", function (a) {
            if (drags.winWid > 640 && (a.clientX < 120 || a.clientX > drags.winWid - 50))
                return !1;
            if (a.clientY < 180 || a.clientY > drags.winHei - 120)
                return !1;
            var e = a.clientX - drags.clientX,
                t = a.clientY - drags.clientY;
            asideNav.style.top = parseInt(drags.y) + t + "px";
            asideNav.style.right = parseInt(drags.x) - e + "px";
        })
    }).on("mouseup", function () {
        drags.down = !1, $(document).off("mousemove");
    });

    
}
nav();
